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Chemistry Crash Course NEET>Chapter 10 - Chemical Kinetics>Level 2>Q 5

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The instantaneous rate of disappearance of ${MnO}_{4}^{-}$ ion in the following reaction is $4.56 \times 10^{- 3} M s^{- 1}$ .

$2 {MnO}_{4}^{-} + 10 I^{-} + 16 H^{+} \to 2 {Mn}^{2 +} + 5 I_{2} + 8 H_{2} O .$

What is the rate of appearance of $I_{2}$ ?

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Important Questions on Chemical Kinetics

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Chemistry Crash Course NEET>Chapter 10 - Chemical Kinetics>Level 2>Q 6

The reaction

X \to Y

follows third order kinetics. If the concentration of

X

is doubled, the rate of formation of

Y

will become

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Chemistry Crash Course NEET>Chapter 10 - Chemical Kinetics>Level 2>Q 7

Under the same reaction conditions, the initial concentration of

1.386 mol {dm}^{- 3}

of a substance becomes half in

40 s

and

20 s

through first-order and zero-order kinetics, respectively. What will be the ratio of the rate constants

(\frac{k_{1}}{k_{0}})

, for the first-order

(k_{1})

and zero-order

(k_{0})

of the reaction?

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Chemistry Crash Course NEET>Chapter 10 - Chemical Kinetics>Level 2>Q 8

What is

t_{3 / 4}

for a first-order reaction?

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Chemistry Crash Course NEET>Chapter 10 - Chemical Kinetics>Level 2>Q 9

The half-life period of a first-order chemical reaction is

6.93

minutes. The time required for the completion of

99.9 %

of the chemical reaction will be:

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Chemistry Crash Course NEET>Chapter 10 - Chemical Kinetics>Level 2>Q 10

The time taken for the initial concentration of a reactant to reduce to half is

4

hours, following first-order kinetics. The fraction of the initial reactant left after

32

hours is:

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Chemistry Crash Course NEET>Chapter 10 - Chemical Kinetics>Level 2>Q 11

Two substances

A

and

B

are present such that

[A] = 4 [B]

. The half-life of

A

is

5

minutes and of

B

is

15

minutes. If they start decaying at the same time, following first-order kinetics, after how much time will the concentration of both become equal?

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Chemistry Crash Course NEET>Chapter 10 - Chemical Kinetics>Level 2>Q 12

The age of a bottle of wine is determined by monitoring the tritium levels in the wine. The activity of tritium is determined to be decreased by

8.0 %

that of a sample of fresh grape juice from the same region from which the wine was bottled. How old is the wine?

(t_{1 / 2}

of tritium is

12.3

years).

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Chemistry Crash Course NEET>Chapter 10 - Chemical Kinetics>Level 2>Q 13

For a first-order reaction, $3 A \to 2 B,$ the concentration of $A$ and $B$ at the point of intersection is given in the figure:

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If $A_{0} = 20$ mol $mol L^{- 1}, [B]$ at the time $t$ is equal to:

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The instantaneous rate of disappearance of MnO4- ion in the following reaction is 4.56×10-3 M s-1. 2MnO4-+10I-+16H+→2Mn2++5I2+8H2O. What is the rate of appearance of I2?

Important Questions on Chemical Kinetics

Learn and Prepare for any exam you want !

The instantaneous rate of disappearance of ${MnO}_{4}^{-}$ ion in the following reaction is $4.56 \times 10^{- 3} M s^{- 1}$ .

$2 {MnO}_{4}^{-} + 10 I^{-} + 16 H^{+} \to 2 {Mn}^{2 +} + 5 I_{2} + 8 H_{2} O .$

What is the rate of appearance of $I_{2}$ ?